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Finding the Fourth Proportional to 81,888.48, 122,832.77 and 22,724.21

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Solution

The fourth proportional to 81,888.48, 122,832.77 and 22,724.21 is: 34,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,888.48 : 122,832.77 = 22,724.21 : x
  2. Step 2: Convert to fraction form
    81,888.48/122,832.77 = 22,724.21/x
  3. Step 3: Cross multiply
    81,888.48x = 122,832.77 × 22,724.21
  4. Step 4: Simplify right side
    81,888.48x = 2,791,276,932.58
  5. Step 5: Solve for x
    x = 2,791,276,932.58/81,888.48
  6. Step 6: Final answer
    x = 34,086.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.